Use String.contains()

src/main/org/apache/tools/ant/filters/LineContains.java

@@ -118,7 +118,7 @@ public final class LineContains
                 boolean matches = true;
                 for (int i = 0; matches && i < containsSize; i++) {
                     String containsStr = (String) contains.elementAt(i);
-                    matches = line.indexOf(containsStr) >= 0;
+                    matches = line.contains(containsStr);
                 }
                 if (matches ^ isNegated()) {
                     break;

src/main/org/apache/tools/ant/filters/TokenFilter.java

@@ -428,7 +428,7 @@ public class TokenFilter extends BaseFilterReader
             if (contains == null) {
                 throw new BuildException("Missing contains in containsstring");
             }
-            if (string.indexOf(contains) > -1) {
+            if (string.contains(contains)) {
                 return string;
             }
             return null;

src/main/org/apache/tools/ant/taskdefs/Copy.java

@@ -1088,7 +1088,7 @@ public class Copy extends Task {
             }
             message.append(ex.getMessage());
         }
-        if (ex.getClass().getName().indexOf("MalformedInput") != -1) {
+        if (ex.getClass().getName().contains("MalformedInput")) {
             message.append(LINE_SEPARATOR);
             message.append(
                 "This is normally due to the input file containing invalid");

src/main/org/apache/tools/ant/taskdefs/Exec.java

@@ -89,7 +89,7 @@ public class Exec extends Task {
         // test if os match
         String myos = System.getProperty("os.name");
         log("Myos = " + myos, Project.MSG_VERBOSE);
-        if ((os != null) && (os.indexOf(myos) < 0)) {
+        if (os != null && !os.contains(myos)) {
             // this command will be executed only on the specified OS
             log("Not found in " + os, Project.MSG_VERBOSE);
             return 0;
@@ -100,9 +100,9 @@ public class Exec extends Task {
           dir = getProject().getBaseDir();
         }
 
-        if (myos.toLowerCase(Locale.ENGLISH).indexOf("windows") >= 0) {
+        if (myos.toLowerCase(Locale.ENGLISH).contains("windows")) {
             if (!dir.equals(getProject().resolveFile("."))) {
-                if (myos.toLowerCase(Locale.ENGLISH).indexOf("nt") >= 0) {
+                if (myos.toLowerCase(Locale.ENGLISH).contains("nt")) {
                     command = "cmd /c cd " + dir + " && " + command;
                 } else {
                     String ant = getProject().getProperty(MagicNames.ANT_HOME);

src/main/org/apache/tools/ant/taskdefs/ExecTask.java

@@ -563,7 +563,7 @@ public class ExecTask extends Task {
         //for the current os.name
         String myos = System.getProperty("os.name");
         log("Current OS is " + myos, Project.MSG_VERBOSE);
-        if ((os != null) && (os.indexOf(myos) < 0)) {
+        if (os != null && !os.contains(myos)) {
             // this command will be executed only on the specified OS
             log("This OS, " + myos
                     + " was not found in the specified list of valid OSes: " + os,

src/main/org/apache/tools/ant/taskdefs/JDBCTask.java

@@ -269,7 +269,7 @@ public abstract class JDBCTask extends Task {
                 String theVendor = dmd.getDatabaseProductName().toLowerCase();
 
                 log("RDBMS = " + theVendor, Project.MSG_VERBOSE);
-                if (theVendor == null || theVendor.indexOf(rdbms) < 0) {
+                if (theVendor == null || !theVendor.contains(rdbms)) {
                     log("Not the required RDBMS: " + rdbms, Project.MSG_VERBOSE);
                     return false;
                 }
@@ -281,7 +281,7 @@ public abstract class JDBCTask extends Task {
                 log("Version = " + theVersion, Project.MSG_VERBOSE);
                 if (theVersion == null
                         || !(theVersion.startsWith(version)
-                        || theVersion.indexOf(" " + version) >= 0)) {
+                        || theVersion.contains(" " + version))) {
                     log("Not the required version: \"" + version + "\"", Project.MSG_VERBOSE);
                     return false;
                 }

src/main/org/apache/tools/ant/taskdefs/Javadoc.java

@@ -2459,7 +2459,7 @@ public class Javadoc extends Task {
 
         // check if file may be vulnerable because it was not
         // patched with "validURL(url)":
-        if (fileContents.indexOf("function validURL(url) {") < 0) {
+        if (!fileContents.contains("function validURL(url) {")) {
             // we need to patch the file!
             final String patchedFileContents = patchContent(fileContents, fixData);
             if (!patchedFileContents.equals(fileContents)) {

src/main/org/apache/tools/ant/taskdefs/Jikes.java

@@ -83,7 +83,7 @@ public class Jikes {
             // Windows has a 32k limit on total arg size, so
             // create a temporary file to store all the arguments
 
-            if (myos.toLowerCase(Locale.ENGLISH).indexOf("windows") >= 0
+            if (myos.toLowerCase(Locale.ENGLISH).contains("windows")
                 && args.length > MAX_FILES_ON_COMMAND_LINE) {
                 BufferedWriter out = null;
                 try {

src/main/org/apache/tools/ant/taskdefs/JikesOutputParser.java

@@ -136,9 +136,9 @@ public class JikesOutputParser implements ExecuteStreamHandler {
             if (line.trim().equals("")) {
                 continue;
             }
-            if (lower.indexOf("error") != -1) {
+            if (lower.contains("error")) {
                 setError(true);
-            } else if (lower.indexOf("warning") != -1) {
+            } else if (lower.contains("warning")) {
                 setError(false);
                    } else {
                 // If we don't know the type of the line

src/main/org/apache/tools/ant/taskdefs/Rmic.java

@@ -754,7 +754,7 @@ public class Rmic extends MatchingTask {
         if (idl) {
             log("will leave uptodate test to rmic implementation in idl mode.",
                 Project.MSG_VERBOSE);
-        } else if (iiop && iiopOpts != null && iiopOpts.indexOf("-always") > -1) {
+        } else if (iiop && iiopOpts != null && iiopOpts.contains("-always")) {
             log("no uptodate test as -always option has been specified",
                 Project.MSG_VERBOSE);
         } else {

src/main/org/apache/tools/ant/taskdefs/SQLExec.java

@@ -761,7 +761,7 @@ public class SQLExec extends JDBCTask {
             // SQL defines "--" as a comment to EOL
             // and in Oracle it may contain a hint
             // so we cannot just remove it, instead we must end it
-            if (!keepformat && line.indexOf("--") >= 0) {
+            if (!keepformat && line.contains("--")) {
                 sql.append("\n");
             }
             int lastDelimPos = lastDelimiterPosition(sql, line);
@@ -906,7 +906,7 @@ public class SQLExec extends JDBCTask {
     }
 
     private String maybeQuote(String s) {
-        if (csvQuoteChar == null || s == null || (!forceCsvQuoteChar && s.indexOf(csvColumnSep) == -1 && s.indexOf(csvQuoteChar) == -1)) {
+        if (csvQuoteChar == null || s == null || (!forceCsvQuoteChar && !s.contains(csvColumnSep) && !s.contains(csvQuoteChar))) {
             return s;
         }
         StringBuilder sb = new StringBuilder(csvQuoteChar);

src/main/org/apache/tools/ant/taskdefs/VerifyJar.java

@@ -180,7 +180,7 @@ public class VerifyJar extends AbstractJarSignerTask {
         String results = outputCache.toString();
         //deal with jdk1.4.2 bug:
         if (ex != null) {
-            if (results.indexOf("zip file closed") >= 0) {
+            if (results.contains("zip file closed")) {
                 log("You are running " + JARSIGNER_COMMAND
                     + " against a JVM with a known bug that manifests as an IllegalStateException.",
                     Project.MSG_WARN);
@@ -188,7 +188,7 @@ public class VerifyJar extends AbstractJarSignerTask {
                 throw ex;
             }
         }
-        if (results.indexOf(VERIFIED_TEXT) < 0) {
+        if (!results.contains(VERIFIED_TEXT)) {
             throw new BuildException(ERROR_NO_VERIFY + jar);
         }
     }

src/main/org/apache/tools/ant/taskdefs/condition/Contains.java

@@ -71,7 +71,7 @@ public class Contains implements Condition {
         }
 
         return caseSensitive
-            ? string.indexOf(subString) > -1
-            : string.toLowerCase().indexOf(subString.toLowerCase()) > -1;
+            ? string.contains(subString)
+            : string.toLowerCase().contains(subString.toLowerCase());
     }
 }

src/main/org/apache/tools/ant/taskdefs/condition/Os.java

@@ -259,17 +259,17 @@ public class Os implements Condition {
 
                 //windows probing logic relies on the word 'windows' in
                 //the OS
-                boolean isWindows = OS_NAME.indexOf(FAMILY_WINDOWS) > -1;
+                boolean isWindows = OS_NAME.contains(FAMILY_WINDOWS);
                 boolean is9x = false;
                 boolean isNT = false;
                 if (isWindows) {
                     //there are only four 9x platforms that we look for
-                    is9x = (OS_NAME.indexOf("95") >= 0
-                            || OS_NAME.indexOf("98") >= 0
-                            || OS_NAME.indexOf("me") >= 0
+                    is9x = (OS_NAME.contains("95")
+                            || OS_NAME.contains("98")
+                            || OS_NAME.contains("me")
                             //wince isn't really 9x, but crippled enough to
                             //be a muchness. Ant doesn't run on CE, anyway.
-                            || OS_NAME.indexOf("ce") >= 0);
+                            || OS_NAME.contains("ce"));
                     isNT = !is9x;
                 }
                 if (family.equals(FAMILY_WINDOWS)) {
@@ -279,28 +279,28 @@ public class Os implements Condition {
                 } else if (family.equals(FAMILY_NT)) {
                     isFamily = isWindows && isNT;
                 } else if (family.equals(FAMILY_OS2)) {
-                    isFamily = OS_NAME.indexOf(FAMILY_OS2) > -1;
+                    isFamily = OS_NAME.contains(FAMILY_OS2);
                 } else if (family.equals(FAMILY_NETWARE)) {
-                    isFamily = OS_NAME.indexOf(FAMILY_NETWARE) > -1;
+                    isFamily = OS_NAME.contains(FAMILY_NETWARE);
                 } else if (family.equals(FAMILY_DOS)) {
                     isFamily = PATH_SEP.equals(";") && !isFamily(FAMILY_NETWARE);
                 } else if (family.equals(FAMILY_MAC)) {
-                    isFamily = OS_NAME.indexOf(FAMILY_MAC) > -1
-                        || OS_NAME.indexOf(DARWIN) > -1;
+                    isFamily = OS_NAME.contains(FAMILY_MAC)
+                        || OS_NAME.contains(DARWIN);
                 } else if (family.equals(FAMILY_TANDEM)) {
-                    isFamily = OS_NAME.indexOf("nonstop_kernel") > -1;
+                    isFamily = OS_NAME.contains("nonstop_kernel");
                 } else if (family.equals(FAMILY_UNIX)) {
                     isFamily = PATH_SEP.equals(":")
                         && !isFamily(FAMILY_VMS)
                         && (!isFamily(FAMILY_MAC) || OS_NAME.endsWith("x")
-                            || OS_NAME.indexOf(DARWIN) > -1);
+                            || OS_NAME.contains(DARWIN));
                 } else if (family.equals(FAMILY_ZOS)) {
-                    isFamily = OS_NAME.indexOf(FAMILY_ZOS) > -1
-                        || OS_NAME.indexOf("os/390") > -1;
+                    isFamily = OS_NAME.contains(FAMILY_ZOS)
+                        || OS_NAME.contains("os/390");
                 } else if (family.equals(FAMILY_OS400)) {
-                    isFamily = OS_NAME.indexOf(FAMILY_OS400) > -1;
+                    isFamily = OS_NAME.contains(FAMILY_OS400);
                 } else if (family.equals(FAMILY_VMS)) {
-                    isFamily = OS_NAME.indexOf(FAMILY_VMS) > -1;
+                    isFamily = OS_NAME.contains(FAMILY_VMS);
                 } else {
                     throw new BuildException(
                         "Don\'t know how to detect os family \""

src/main/org/apache/tools/ant/taskdefs/condition/ResourceContains.java

@@ -155,7 +155,7 @@ public class ResourceContains implements Condition {
                 contents = contents.toLowerCase();
                 sub = sub.toLowerCase();
             }
-            return contents.indexOf(sub) >= 0;
+            return contents.contains(sub);
         } catch (IOException e) {
             throw new BuildException("There was a problem accessing resource : " + resource);
         }

src/main/org/apache/tools/ant/taskdefs/optional/ANTLR.java

@@ -308,7 +308,7 @@ public class ANTLR extends Task {
                 throw new BuildException("ANTLR returned: " + err, getLocation());
             }
             String output = bos.toString();
-            if (output.indexOf("error:") > -1) {
+            if (output.contains("error:")) {
                 throw new BuildException("ANTLR signaled an error: "
                                          + output, getLocation());
             }

src/main/org/apache/tools/ant/taskdefs/optional/NetRexxC.java

@@ -819,24 +819,24 @@ public class NetRexxC extends MatchingTask {
                 }
                 // verbose level logging for suppressed messages
                 if (suppressMethodArgumentNotUsed
-                    && l.indexOf(MSG_METHOD_ARGUMENT_NOT_USED) != -1) {
+                    && l.contains(MSG_METHOD_ARGUMENT_NOT_USED)) {
                     log(l, Project.MSG_VERBOSE);
                 } else if (suppressPrivatePropertyNotUsed
-                    && l.indexOf(MSG_PRIVATE_PROPERTY_NOT_USED) != -1) {
+                    && l.contains(MSG_PRIVATE_PROPERTY_NOT_USED)) {
                     log(l, Project.MSG_VERBOSE);
                 } else if (suppressVariableNotUsed
-                    && l.indexOf(MSG_VARIABLE_NOT_USED) != -1) {
+                    && l.contains(MSG_VARIABLE_NOT_USED)) {
                     log(l, Project.MSG_VERBOSE);
                 } else if (suppressExceptionNotSignalled
-                    && l.indexOf(MSG_EXCEPTION_NOT_SIGNALLED) != -1) {
+                    && l.contains(MSG_EXCEPTION_NOT_SIGNALLED)) {
                     log(l, Project.MSG_VERBOSE);
                 } else if (suppressDeprecation
-                    && l.indexOf(MSG_DEPRECATION) != -1) {
+                    && l.contains(MSG_DEPRECATION)) {
                     log(l, Project.MSG_VERBOSE);
-                } else if (l.indexOf("Error:") != -1) {
+                } else if (l.contains("Error:")) {
                     // error level logging for compiler errors
                     log(l, Project.MSG_ERR);
-                } else if (l.indexOf("Warning:") != -1) {
+                } else if (l.contains("Warning:")) {
                     // warning for all warning messages
                     log(l, Project.MSG_WARN);
                 } else {

src/main/org/apache/tools/ant/taskdefs/optional/ejb/JonasDeploymentTool.java

@@ -471,7 +471,7 @@ public class JonasDeploymentTool extends GenericDeploymentTool {
         if (getConfig().namingScheme.getValue().equals(EjbJar.NamingScheme.DESCRIPTOR)) {
 
             // try to find JOnAS specific convention name
-            if (descriptorFileName.indexOf(getConfig().baseNameTerminator) == -1) {
+            if (!descriptorFileName.contains(getConfig().baseNameTerminator)) {
 
                 // baseNameTerminator not found: the descriptor use the
                 // JOnAS naming convention, ie [Foo.xml,jonas-Foo.xml] and

src/main/org/apache/tools/ant/taskdefs/optional/javah/Gcjh.java

@@ -42,7 +42,7 @@ public class Gcjh implements JavahAdapter {
             Execute.runCommand(javah, cmd.getCommandline());
             return true;
         } catch (BuildException e) {
-            if (e.getMessage().indexOf("failed with return code") == -1) {
+            if (!e.getMessage().contains("failed with return code")) {
                 throw e;
             }
         }

src/main/org/apache/tools/ant/taskdefs/optional/javah/Kaffeh.java

@@ -47,7 +47,7 @@ public class Kaffeh implements JavahAdapter {
             Execute.runCommand(javah, cmd.getCommandline());
             return true;
         } catch (BuildException e) {
-            if (e.getMessage().indexOf("failed with return code") == -1) {
+            if (!e.getMessage().contains("failed with return code")) {
                 throw e;
             }
         }

src/main/org/apache/tools/ant/taskdefs/optional/jlink/jlink.java

@@ -228,7 +228,7 @@ public class jlink {
                         //entry from another mergefile was called "com".
                         //In that case, just ignore the error and go on to the
                         //next entry.
-                        if (ex.getMessage().indexOf("duplicate") >= 0) {
+                        if (ex.getMessage().contains("duplicate")) {
                             //It was the duplicate entry.
                             continue;
                         }

src/main/org/apache/tools/ant/taskdefs/optional/junit/JUnitTestRunner.java

@@ -1171,7 +1171,7 @@ public class JUnitTestRunner implements TestListener, JUnitTaskMirror.JUnitTestR
 
     private static boolean filterLine(final String line) {
         for (String filter : DEFAULT_TRACE_FILTERS) {
-            if (line.indexOf(filter) != -1) {
+            if (line.contains(filter)) {
                 return true;
             }
         }

src/main/org/apache/tools/ant/taskdefs/optional/net/FTP.java

@@ -2124,7 +2124,7 @@ public class FTP extends Task implements FTPTaskConfig {
             log("Failed to issue Site Command: " + theCMD, Project.MSG_WARN);
         } else {
             for (String reply : ftp.getReplyStrings()) {
-                if (reply != null && reply.indexOf("200") == -1) {
+                if (reply != null && !reply.contains("200")) {
                     log(reply, Project.MSG_WARN);
                 }
             }

src/main/org/apache/tools/ant/taskdefs/optional/net/FTPTaskMirrorImpl.java

@@ -1505,7 +1505,7 @@ public class FTPTaskMirrorImpl implements FTPTaskMirror {
                 Project.MSG_WARN);
         } else {
             for (String reply : ftp.getReplyStrings()) {
-                if (reply.indexOf("200") == -1) {
+                if (!reply.contains("200")) {
                     task.log(reply, Project.MSG_WARN);
                 }
             }

src/main/org/apache/tools/ant/taskdefs/optional/ssh/SSHExec.java

@@ -452,7 +452,7 @@ public class SSHExec extends SSHBase {
         } catch (final BuildException e) {
             throw e;
         } catch (final JSchException e) {
-            if (e.getMessage().indexOf("session is down") >= 0) {
+            if (e.getMessage().contains("session is down")) {
                 if (getFailonerror()) {
                     throw new BuildException(TIMEOUT_MESSAGE, e);
                 }

src/main/org/apache/tools/ant/taskdefs/optional/ssh/SSHSession.java

@@ -165,7 +165,7 @@ public class SSHSession extends SSHBase {
             // completed successfully
 
         } catch (final JSchException e) {
-            if (e.getMessage().indexOf("session is down") >= 0) {
+            if (e.getMessage().contains("session is down")) {
                 if (getFailonerror()) {
                     throw new BuildException(TIMEOUT_MESSAGE, e);
                 }

src/main/org/apache/tools/ant/types/Commandline.java

@@ -428,15 +428,14 @@ public class Commandline implements Cloneable {
      *                           and double quotes.
      */
     public static String quoteArgument(String argument) {
-        if (argument.indexOf("\"") > -1) {
-            if (argument.indexOf("\'") > -1) {
+        if (argument.contains("\"")) {
+            if (argument.contains("\'")) {
                 throw new BuildException("Can\'t handle single and double"
                         + " quotes in same argument");
             }
             return '\'' + argument + '\'';
         }
-        if (argument.indexOf("\'") > -1
-               || argument.indexOf(" ") > -1
+        if (argument.contains("\'") || argument.contains(" ")
                // WIN9x uses a bat file for executing commands
                || (IS_WIN_9X && argument.indexOf(';') != -1)) {
             return '\"' + argument + '\"';

src/main/org/apache/tools/ant/types/FilterSet.java

@@ -597,7 +597,7 @@ public class FilterSet extends DataType implements Cloneable {
         }
         passedTokens.addElement(parent);
         String value = iReplaceTokens(line);
-        if (value.indexOf(beginToken) == -1 && !duplicateToken
+        if (!value.contains(beginToken) && !duplicateToken
                 && recurseDepth == 1) {
             passedTokens = null;
         } else if (duplicateToken) {

src/main/org/apache/tools/ant/types/Path.java

@@ -608,7 +608,7 @@ public class Path extends DataType implements Cloneable, ResourceCollection {
             addExisting(systemBootClasspath);
         }
 
-        if (System.getProperty("java.vendor").toLowerCase(Locale.ENGLISH).indexOf("microsoft") >= 0) {
+        if (System.getProperty("java.vendor").toLowerCase(Locale.ENGLISH).contains("microsoft")) {
             // TODO is this code still necessary? is there any 1.2+ port?
             // Pull in *.zip from packages directory
             FileSet msZipFiles = new FileSet();

src/main/org/apache/tools/ant/types/selectors/ContainsSelector.java

@@ -186,7 +186,7 @@ public class ContainsSelector extends BaseExtendSelector implements ResourceSele
                     if (ignorewhitespace) {
                         teststr = SelectorUtils.removeWhitespace(teststr);
                     }
-                    if (teststr.indexOf(userstr) > -1) {
+                    if (teststr.contains(userstr)) {
                         return true;
                     }
                     teststr = in.readLine();

src/main/org/apache/tools/ant/util/RegexpPatternMapper.java

@@ -119,7 +119,7 @@ public class RegexpPatternMapper implements FileNameMapper {
             return null;
         }
         if (handleDirSep) {
-            if (sourceFileName.indexOf("\\") != -1) {
+            if (sourceFileName.contains("\\")) {
                 sourceFileName = sourceFileName.replace('\\', '/');
             }
         }

src/main/org/apache/tools/tar/TarEntry.java

@@ -1042,7 +1042,7 @@ public class TarEntry implements TarConstants {
                         fileName = fileName.substring(2);
                     }
                 }
-            } else if (osname.indexOf("netware") > -1) {
+            } else if (osname.contains("netware")) {
                 int colon = fileName.indexOf(':');
                 if (colon != -1) {
                     fileName = fileName.substring(colon + 1);

src/tests/junit/org/apache/tools/ant/BuildFileTest.java

@@ -122,7 +122,7 @@ public abstract class BuildFileTest extends TestCase {
         String realLog = getLog();
         assertTrue("expecting log to contain \"" + substring + "\" log was \""
                    + realLog + "\"",
-                   realLog.indexOf(substring) >= 0);
+                realLog.contains(substring));
     }
 
     /**
@@ -134,7 +134,7 @@ public abstract class BuildFileTest extends TestCase {
         String realLog = getLog();
         assertFalse("didn't expect log to contain \"" + substring + "\" log was \""
                     + realLog + "\"",
-                    realLog.indexOf(substring) >= 0);
+                realLog.contains(substring));
     }
 
     /**
@@ -160,7 +160,7 @@ public abstract class BuildFileTest extends TestCase {
         String realMessage = (message != null)
             ? message
             : "expecting output to contain \"" + substring + "\" output was \"" + realOutput + "\"";
-        assertTrue(realMessage, realOutput.indexOf(substring) >= 0);
+        assertTrue(realMessage, realOutput.contains(substring));
     }
 
     /**
@@ -176,7 +176,7 @@ public abstract class BuildFileTest extends TestCase {
         String realMessage = (message != null)
             ? message
             : "expecting output to not contain \"" + substring + "\" output was \"" + realOutput + "\"";
-        assertFalse(realMessage, realOutput.indexOf(substring) >= 0);
+        assertFalse(realMessage, realOutput.contains(substring));
     }
 
     /**
@@ -237,7 +237,7 @@ public abstract class BuildFileTest extends TestCase {
         assertTrue("expecting debug log to contain \"" + substring
                    + "\" log was \""
                    + realLog + "\"",
-                   realLog.indexOf(substring) >= 0);
+                realLog.contains(substring));
     }
 
     /**
@@ -425,7 +425,7 @@ public abstract class BuildFileTest extends TestCase {
             executeTarget(target);
         } catch (org.apache.tools.ant.BuildException ex) {
             buildException = ex;
-            if ((null != contains) && (ex.getMessage().indexOf(contains) == -1)) {
+            if ((null != contains) && (!ex.getMessage().contains(contains))) {
                 fail("Should throw BuildException because '" + cause + "' with message containing '" + contains + "' (actual message '" + ex.getMessage() + "' instead)");
             }
             return;

src/tests/junit/org/apache/tools/ant/LocationTest.java

@@ -70,18 +70,16 @@ public class LocationTest {
     public void testMacrodefWrappedTask() {
         buildRule.executeTarget("testMacrodefWrappedTask");
         Echo e = (Echo) buildRule.getProject().getReference("echo3");
-        assertTrue(buildRule.getLog().indexOf("Line: "
-                                    + (e.getLocation().getLineNumber() + 1))
-                   > -1);
+        assertTrue(buildRule.getLog().contains("Line: "
+                + (e.getLocation().getLineNumber() + 1)));
     }
 
     @Test
     public void testPresetdefWrappedTask() {
         buildRule.executeTarget("testPresetdefWrappedTask");
         Echo e = (Echo) buildRule.getProject().getReference("echo4");
-        assertTrue(buildRule.getLog().indexOf("Line: "
-                                    + (e.getLocation().getLineNumber() + 1))
-                   > -1);
+        assertTrue(buildRule.getLog().contains("Line: "
+                + (e.getLocation().getLineNumber() + 1)));
     }
 
     public static class EchoLocation extends Task {

src/tests/junit/org/apache/tools/ant/TaskContainerTest.java

@@ -38,29 +38,29 @@ public class TaskContainerTest {
     public void testPropertyExpansion() {
         buildRule.executeTarget("testPropertyExpansion");
         assertTrue("attribute worked",
-                   buildRule.getLog().indexOf("As attribute: it worked") > -1);
+                buildRule.getLog().contains("As attribute: it worked"));
         assertTrue("nested text worked",
-                   buildRule.getLog().indexOf("As nested text: it worked") > -1);
+                buildRule.getLog().contains("As nested text: it worked"));
     }
 
     @Test
     public void testTaskdef() {
         buildRule.executeTarget("testTaskdef");
         assertTrue("attribute worked",
-                   buildRule.getLog().indexOf("As attribute: it worked") > -1);
+                buildRule.getLog().contains("As attribute: it worked"));
         assertTrue("nested text worked",
-                   buildRule.getLog().indexOf("As nested text: it worked") > -1);
+                buildRule.getLog().contains("As nested text: it worked"));
         assertTrue("nested text worked",
-                   buildRule.getLog().indexOf("As nested task: it worked") > -1);
+                buildRule.getLog().contains("As nested task: it worked"));
     }
 
     @Test
     public void testCaseInsensitive() {
         buildRule.executeTarget("testCaseInsensitive");
         assertTrue("works outside of container",
-                   buildRule.getLog().indexOf("hello ") > -1);
+                buildRule.getLog().contains("hello "));
         assertTrue("works inside of container",
-                   buildRule.getLog().indexOf("world") > -1);
+                buildRule.getLog().contains("world"));
     }
 
 }

src/tests/junit/org/apache/tools/ant/taskdefs/AntTest.java

@@ -318,9 +318,9 @@ public class AntTest {
     @Test
     public void testPropertySet() {
         buildRule.executeTarget("test-propertyset");
-        assertTrue(buildRule.getLog().indexOf("test1 is ${test1}") > -1);
-        assertTrue(buildRule.getLog().indexOf("test2 is ${test2}") > -1);
-        assertTrue(buildRule.getLog().indexOf("test1.x is 1") > -1);
+        assertTrue(buildRule.getLog().contains("test1 is ${test1}"));
+        assertTrue(buildRule.getLog().contains("test2 is ${test2}"));
+        assertTrue(buildRule.getLog().contains("test1.x is 1"));
     }
 
     @Test

src/tests/junit/org/apache/tools/ant/taskdefs/ConcatTest.java

@@ -199,7 +199,7 @@ public class ConcatTest {
     @Test
     public void testFilter() {
         buildRule.executeTarget("testfilter");
-        assertTrue(buildRule.getLog().indexOf("REPLACED") > -1);
+        assertTrue(buildRule.getLog().contains("REPLACED"));
     }
 
     @Test
@@ -251,7 +251,7 @@ public class ConcatTest {
     @Test
     public void testfilterinline() {
         buildRule.executeTarget("testfilterinline");
-        assertTrue(buildRule.getLog().indexOf("REPLACED") > -1);
+        assertTrue(buildRule.getLog().contains("REPLACED"));
     }
 
     /**
@@ -260,8 +260,8 @@ public class ConcatTest {
     @Test
     public void testmultireader() {
         buildRule.executeTarget("testmultireader");
-        assertTrue(buildRule.getLog().indexOf("Bye") > -1);
-        assertTrue(buildRule.getLog().indexOf("Hello") == -1);
+        assertTrue(buildRule.getLog().contains("Bye"));
+        assertTrue(!buildRule.getLog().contains("Hello"));
     }
     /**
      * Check if fixlastline works
@@ -302,7 +302,7 @@ public class ConcatTest {
         assertTrue(
             "expecting file " + filename + " to contain " +
             contains +
-            " but got " + content, content.indexOf(contains) > -1);
+            " but got " + content, content.contains(contains));
     }
 
 }

src/tests/junit/org/apache/tools/ant/taskdefs/CopyTest.java

@@ -110,7 +110,7 @@ public class CopyTest {
     @Test
     public void testFilterTest() {
         buildRule.executeTarget("filtertest");
-        assertTrue(buildRule.getLog().indexOf("loop in tokens") == -1);
+        assertTrue(!buildRule.getLog().contains("loop in tokens"));
     }
 
     @Test

src/tests/junit/org/apache/tools/ant/taskdefs/JarTest.java

@@ -344,33 +344,33 @@ public class JarTest {
     @Test
     public void testNoVersionInfoIgnore() {
         buildRule.executeTarget("testNoVersionInfoIgnore");
-        assertTrue(buildRule.getFullLog().indexOf("No Implementation-Title set.") > -1);
-        assertTrue(buildRule.getFullLog().indexOf("No Implementation-Version set.") > -1);
-        assertTrue(buildRule.getFullLog().indexOf("No Implementation-Vendor set.") > -1);
+        assertTrue(buildRule.getFullLog().contains("No Implementation-Title set."));
+        assertTrue(buildRule.getFullLog().contains("No Implementation-Version set."));
+        assertTrue(buildRule.getFullLog().contains("No Implementation-Vendor set."));
     }
 
     @Test
     public void testNoVersionInfoWarn() {
         buildRule.executeTarget("testNoVersionInfoWarn");
-        assertTrue(buildRule.getLog().indexOf("No Implementation-Title set.") > -1);
-        assertTrue(buildRule.getLog().indexOf("No Implementation-Version set.") > -1);
-        assertTrue(buildRule.getLog().indexOf("No Implementation-Vendor set.") > -1);
+        assertTrue(buildRule.getLog().contains("No Implementation-Title set."));
+        assertTrue(buildRule.getLog().contains("No Implementation-Version set."));
+        assertTrue(buildRule.getLog().contains("No Implementation-Vendor set."));
     }
 
     @Test
     public void testNoVersionInfoNoStrict() {
         buildRule.executeTarget("testNoVersionInfoNoStrict");
-        assertFalse(buildRule.getLog().indexOf("No Implementation-Title set.") > -1);
-        assertFalse(buildRule.getLog().indexOf("No Implementation-Version set.") > -1);
-        assertFalse(buildRule.getLog().indexOf("No Implementation-Vendor set.") > -1);
+        assertFalse(buildRule.getLog().contains("No Implementation-Title set."));
+        assertFalse(buildRule.getLog().contains("No Implementation-Version set."));
+        assertFalse(buildRule.getLog().contains("No Implementation-Vendor set."));
     }
 
     @Test
     public void testHasVersionInfo() {
         buildRule.executeTarget("testHasVersionInfo");
-        assertFalse(buildRule.getLog().indexOf("No Implementation-Title set.") > -1);
-        assertFalse(buildRule.getLog().indexOf("No Implementation-Version set.") > -1);
-        assertFalse(buildRule.getLog().indexOf("No Implementation-Vendor set.") > -1);
+        assertFalse(buildRule.getLog().contains("No Implementation-Title set."));
+        assertFalse(buildRule.getLog().contains("No Implementation-Version set."));
+        assertFalse(buildRule.getLog().contains("No Implementation-Vendor set."));
     }
 
 }

src/tests/junit/org/apache/tools/ant/taskdefs/LoadFileTest.java

@@ -102,7 +102,7 @@ public class LoadFileTest {
     @Test
     public void testLoadAFile() throws BuildException {
         buildRule.executeTarget("testLoadAFile");
-        if(buildRule.getProject().getProperty("testLoadAFile").indexOf("eh?")<0) {
+        if(!buildRule.getProject().getProperty("testLoadAFile").contains("eh?")) {
             fail("property is not all in the file");
         }
     }
@@ -122,7 +122,7 @@ public class LoadFileTest {
     @Test
     public void testEvalProps() throws BuildException {
         buildRule.executeTarget("testEvalProps");
-        if(buildRule.getProject().getProperty("testEvalProps").indexOf("rain")<0) {
+        if(!buildRule.getProject().getProperty("testEvalProps").contains("rain")) {
             fail("property eval broken");
         }
     }
@@ -133,7 +133,7 @@ public class LoadFileTest {
     @Test
     public void testFilterChain() throws BuildException {
         buildRule.executeTarget("testFilterChain");
-        if(buildRule.getProject().getProperty("testFilterChain").indexOf("World!")<0) {
+        if(!buildRule.getProject().getProperty("testFilterChain").contains("World!")) {
             fail("Filter Chain broken");
         }
     }

src/tests/junit/org/apache/tools/ant/taskdefs/MacroDefTest.java

@@ -188,7 +188,7 @@ public class MacroDefTest {
         try {
             buildRule.executeTarget("backtraceoff");
         } catch (BuildException ex) {
-            if (ex.getMessage().indexOf("following error occurred") != -1) {
+            if (ex.getMessage().contains("following error occurred")) {
                 fail("error message contained backtrace - " + ex.getMessage());
             }
         }

src/tests/junit/org/apache/tools/ant/taskdefs/MakeUrlTest.java

@@ -161,7 +161,7 @@ public class MakeUrlTest {
         String result = getProperty(property);
 
         assertTrue("expected " + contains + " in " + result,
-                result != null && result.indexOf(contains) >= 0);
+                result != null && result.contains(contains));
     }
 
     /**

src/tests/junit/org/apache/tools/ant/taskdefs/ManifestTest.java

@@ -395,14 +395,14 @@ public class ManifestTest {
         String mfAsString = mf.toString();
         assertNotNull(mfAsString);
         assertTrue(mfAsString.startsWith("Manifest-Version: 2.0"));
-        assertTrue(mfAsString.indexOf("Foo: Bar") > -1);
+        assertTrue(mfAsString.contains("Foo: Bar"));
 
         mf = getManifest(new File(outDir, "mftest2.mf"));
         assertNotNull(mf);
         mfAsString = mf.toString();
         assertNotNull(mfAsString);
         assertEquals(-1, mfAsString.indexOf("Foo: Bar"));
-        assertTrue(mfAsString.indexOf("Foo: Baz") > -1);
+        assertTrue(mfAsString.contains("Foo: Baz"));
     }
 
     @Test

src/tests/junit/org/apache/tools/ant/taskdefs/PropertyTest.java

@@ -68,7 +68,7 @@ public class PropertyTest {
             fail("Did not throw exception on circular exception");
         } catch (BuildException e) {
             assertTrue("Circular definition not detected - ",
-                     e.getMessage().indexOf("was circularly defined") != -1);
+                    e.getMessage().contains("was circularly defined"));
         }
 
     }

src/tests/junit/org/apache/tools/ant/taskdefs/SQLExecTest.java

@@ -90,7 +90,7 @@ public class SQLExecTest {
         try {
             sql.execute();
         } catch (BuildException e){
-            assertTrue(e.getCause().getMessage().indexOf("No suitable Driver") != -1);
+            assertTrue(e.getCause().getMessage().contains("No suitable Driver"));
         }
         assertTrue(JDBCTask.getLoaderMap().containsKey(NULL_DRIVER));
         assertSame(sql.getLoader(), JDBCTask.getLoaderMap().get(NULL_DRIVER));

src/tests/junit/org/apache/tools/ant/taskdefs/StyleTest.java

@@ -232,7 +232,7 @@ public class StyleTest {
               "expecting file " + filename
             + " to contain " + contains
             + " but got " + content,
-            content.indexOf(contains) > -1);
+                content.contains(contains));
     }
 
 }

src/tests/junit/org/apache/tools/ant/taskdefs/SyncTest.java

@@ -41,7 +41,7 @@ public class SyncTest {
         buildRule.executeTarget("simplecopy");
         String d = buildRule.getProject().getProperty("dest") + "/a/b/c/d";
         assertFileIsPresent(d);
-        assertTrue(buildRule.getFullLog().indexOf("dangling") == -1);
+        assertTrue(!buildRule.getFullLog().contains("dangling"));
     }
 
     @Test
@@ -51,7 +51,7 @@ public class SyncTest {
         assertFileIsNotPresent(d);
         String c = buildRule.getProject().getProperty("dest") + "/a/b/c";
         assertFileIsNotPresent(c);
-        assertTrue(buildRule.getFullLog().indexOf("dangling") == -1);
+        assertTrue(!buildRule.getFullLog().contains("dangling"));
     }
 
     @Test
@@ -61,7 +61,7 @@ public class SyncTest {
         assertFileIsNotPresent(d);
         String c = buildRule.getProject().getProperty("dest") + "/a/b/c";
         assertFileIsPresent(c);
-        assertTrue(buildRule.getFullLog().indexOf("dangling") == -1);
+        assertTrue(!buildRule.getFullLog().contains("dangling"));
     }
 
     @Test
@@ -85,7 +85,7 @@ public class SyncTest {
         assertFileIsPresent(d);
         String f = buildRule.getProject().getProperty("dest") + "/e/f";
         assertFileIsNotPresent(f);
-        assertTrue(buildRule.getFullLog().indexOf("Removing orphan file:") > -1);
+        assertTrue(buildRule.getFullLog().contains("Removing orphan file:"));
         assertContains("Removed 1 dangling file from", buildRule.getFullLog());
         assertContains("Removed 1 dangling directory from", buildRule.getFullLog());
     }
@@ -97,7 +97,7 @@ public class SyncTest {
         assertFileIsPresent(d);
         String f = buildRule.getProject().getProperty("dest") + "/e/f";
         assertFileIsNotPresent(f);
-        assertTrue(buildRule.getFullLog().indexOf("Removing orphan file:") > -1);
+        assertTrue(buildRule.getFullLog().contains("Removing orphan file:"));
         assertContains("Removed 1 dangling file from", buildRule.getFullLog());
         assertContains("Removed 1 dangling directory from", buildRule.getFullLog());
     }
@@ -111,7 +111,7 @@ public class SyncTest {
         assertFileIsPresent(c);
         String f = buildRule.getProject().getProperty("dest") + "/e/f";
         assertFileIsNotPresent(f);
-        assertTrue(buildRule.getFullLog().indexOf("Removing orphan directory:") > -1);
+        assertTrue(buildRule.getFullLog().contains("Removing orphan directory:"));
         assertContains("NO dangling file to remove from", buildRule.getFullLog());
         assertContains("Removed 2 dangling directories from", buildRule.getFullLog());
     }
@@ -123,7 +123,7 @@ public class SyncTest {
         assertFileIsPresent(d);
         String f = buildRule.getProject().getProperty("dest") + "/e/f";
         assertFileIsPresent(f);
-        assertTrue(buildRule.getFullLog().indexOf("Removing orphan file:") == -1);
+        assertTrue(!buildRule.getFullLog().contains("Removing orphan file:"));
     }
 
     @Test
@@ -133,7 +133,7 @@ public class SyncTest {
         assertFileIsPresent(d);
         String f = buildRule.getProject().getProperty("dest") + "/e/f";
         assertFileIsPresent(f);
-        assertTrue(buildRule.getFullLog().indexOf("Removing orphan file:") == -1);
+        assertTrue(!buildRule.getFullLog().contains("Removing orphan file:"));
     }
 
     public void assertFileIsPresent(String f) {

src/tests/junit/org/apache/tools/ant/taskdefs/TaskdefTest.java

@@ -119,10 +119,10 @@ public class TaskdefTest {
         buildRule.executeTarget("testOverride");
         String log = buildRule.getLog();
         assertTrue("override warning sent",
-                   log.indexOf("Trying to override old definition of task copy") > -1);
+                log.contains("Trying to override old definition of task copy"));
         assertTrue("task inside target worked",
-                   log.indexOf("In target") > -1);
+                log.contains("In target"));
         assertTrue("task inside target worked",
-                   log.indexOf("In TaskContainer") > -1);
+                log.contains("In TaskContainer"));
     }
 }

src/tests/junit/org/apache/tools/ant/taskdefs/optional/EchoPropertiesTest.java

@@ -131,7 +131,7 @@ public class EchoPropertiesTest {
         try {
             String read = null;
             while ((read = br.readLine()) != null) {
-                if (read.indexOf("<property name=\"test.property\" value=\""+TEST_VALUE+"\" />") >= 0) {
+                if (read.contains("<property name=\"test.property\" value=\"" + TEST_VALUE + "\" />")) {
                     // found the property we set - it's good.
                     return;
                 }

src/tests/junit/org/apache/tools/ant/taskdefs/optional/XmlValidateTest.java

@@ -137,7 +137,7 @@ public class XmlValidateTest {
                 throw new AssumptionViolatedException("parser doesn't support schema");
             } else {
                 assertTrue(
-                    e.getMessage().indexOf("not a valid XML document") > -1);
+                        e.getMessage().contains("not a valid XML document"));
             }
         }
     }

src/tests/junit/org/apache/tools/ant/taskdefs/optional/XsltTest.java

@@ -77,7 +77,7 @@ public class XsltTest {
     @Test
     public void testStyleSheetWithInclude() throws Exception {
         buildRule.executeTarget("testStyleSheetWithInclude");
-        if (buildRule.getLog().indexOf("java.io.FileNotFoundException") != -1) {
+        if (buildRule.getLog().contains("java.io.FileNotFoundException")) {
             fail("xsl:include was not found");
         }
     }

src/tests/junit/org/apache/tools/ant/taskdefs/optional/image/ImageTest.java

@@ -116,7 +116,7 @@ public class ImageTest {
         } catch (RuntimeException re){
             assertTrue("Run time exception should say 'Unable to process image stream'. :"
                        + re.toString(),
-                       re.toString().indexOf("Unable to process image stream") > -1);
+                    re.toString().contains("Unable to process image stream"));
         }
     }
 

src/tests/junit/org/apache/tools/ant/taskdefs/optional/junit/JUnitTestRunnerTest.java

@@ -80,7 +80,7 @@ public class JUnitTestRunnerTest {
         runner.run();
         String error = runner.getFormatter().getError();
         assertEquals(error, JUnitTestRunner.ERRORS, runner.getRetCode());
-        assertTrue(error, error.indexOf("thrown on purpose") != -1);
+        assertTrue(error, error.contains("thrown on purpose"));
     }
 
     // check that something which is not a testcase generates no errors

src/tests/junit/org/apache/tools/ant/taskdefs/optional/script/ScriptDefTest.java

@@ -56,10 +56,10 @@ public class ScriptDefTest {
         File baseDir = fileset.getDir(p);
         String log = buildRule.getLog();
         assertTrue("Expecting attribute value printed",
-            log.indexOf("Attribute attr1 = test") != -1);
+                log.contains("Attribute attr1 = test"));
 
         assertTrue("Expecting nested element value printed",
-            log.indexOf("Fileset basedir = " + baseDir.getAbsolutePath()) != -1);
+                log.contains("Fileset basedir = " + baseDir.getAbsolutePath()));
     }
 
     @Test
@@ -91,10 +91,10 @@ public class ScriptDefTest {
         File baseDir = fileset.getDir(p);
         String log = buildRule.getLog();
         assertTrue("Expecting attribute value to be printed",
-            log.indexOf("Attribute attr1 = test") != -1);
+                log.contains("Attribute attr1 = test"));
 
         assertTrue("Expecting nested element value to be printed",
-            log.indexOf("Fileset basedir = " + baseDir.getAbsolutePath()) != -1);
+                log.contains("Fileset basedir = " + baseDir.getAbsolutePath()));
     }
 
     @Test
@@ -117,8 +117,8 @@ public class ScriptDefTest {
     public void testDoubleDef() {
         buildRule.executeTarget("doubledef");
         String log = buildRule.getLog();
-        assertTrue("Task1 did not execute", log.indexOf("Task1") != -1);
-        assertTrue("Task2 did not execute", log.indexOf("Task2") != -1);
+        assertTrue("Task1 did not execute", log.contains("Task1"));
+        assertTrue("Task2 did not execute", log.contains("Task2"));
     }
 
     @Test
@@ -137,7 +137,7 @@ public class ScriptDefTest {
         // get the fileset and its basedir
         String log = buildRule.getLog();
         assertTrue("Expecting property in attribute value replaced",
-            log.indexOf("Attribute value = test") != -1);
+                log.contains("Attribute value = test"));
     }
 
     @Test

src/tests/junit/org/apache/tools/ant/types/CommandlineJavaTest.java

@@ -94,7 +94,7 @@ public class CommandlineJavaTest {
         assertEquals("with classpath", "-Djava.compiler=NONE", s[1]);
         assertEquals("with classpath", "-classpath", s[2]);
         assertTrue("build.xml contained",
-               s[3].indexOf("build.xml"+java.io.File.pathSeparator) >= 0);
+                s[3].contains("build.xml" + java.io.File.pathSeparator));
         assertTrue("ant.jar contained", s[3].endsWith("ant.jar"));
         assertEquals("with classpath", "junit.textui.TestRunner", s[4]);
         assertEquals("with classpath",

src/tests/junit/org/apache/tools/ant/types/PathTest.java

@@ -572,7 +572,7 @@ public class PathTest {
             assertEquals(0, p.list().length);
         } catch (BuildException x) {
             String m = x.toString();
-            assertTrue(m, m.indexOf("circular") != -1);
+            assertTrue(m, m.contains("circular"));
         }
     }
 

src/tests/junit/org/apache/tools/ant/types/RedirectorElementTest.java

@@ -73,7 +73,7 @@ public class RedirectorElementTest {
     @Test
     public void testLogInputString() {
         buildRule.executeTarget("testLogInputString");
-        if (buildRule.getLog().indexOf("testLogInputString can-cat") >= 0) {
+        if (buildRule.getLog().contains("testLogInputString can-cat")) {
             AntAssert.assertContains("Using input string", buildRule.getFullLog());
         }
     }

src/tests/junit/org/apache/tools/ant/types/selectors/ModifiedSelectorTest.java

@@ -185,7 +185,7 @@ public class ModifiedSelectorTest {
 
             assertNotNull("'fs.full.value' must be set.", fsFullValue);
             assertTrue("'fs.full.value' must not be null.", !"".equals(fsFullValue));
-            assertTrue("'fs.full.value' must contain ant.bat.", fsFullValue.indexOf("ant.bat")>-1);
+            assertTrue("'fs.full.value' must contain ant.bat.", fsFullValue.contains("ant.bat"));
 
             assertNotNull("'fs.mod.value' must be set.", fsModValue);
             // must be empty according to the Mock* implementations

src/tests/junit/org/apache/tools/ant/util/LayoutPreservingPropertiesTest.java

@@ -59,8 +59,8 @@ public class LayoutPreservingPropertiesTest {
 
         // and now make sure that the comments made it into the new file
         String s = readFile(tmp);
-        assertTrue("missing comment", s.indexOf("# a comment") > -1);
-        assertTrue("missing comment", s.indexOf("! more comment") > -1);
+        assertTrue("missing comment", s.contains("# a comment"));
+        assertTrue("missing comment", s.contains("! more comment"));
     }
 
     /**
@@ -89,16 +89,16 @@ public class LayoutPreservingPropertiesTest {
         // and check that the resulting file looks okay
         String s = readFile(tmp);
 
-        assertTrue(s.indexOf("\\ prop\\ one\\ =\\ \\ leading and trailing"
-                             + " spaces ") > -1);
-        assertTrue(s.indexOf("prop\\ttwo=contains\\ttab") > -1);
-        assertTrue(s.indexOf("prop\\nthree=contains\\nnewline") > -1);
-        assertTrue(s.indexOf("prop\\rfour=contains\\rcarriage return") > -1);
-        assertTrue(s.indexOf("prop\\\\six=contains\\\\backslash") > -1);
-        assertTrue(s.indexOf("prop\\:seven=contains\\:colon") > -1);
-        assertTrue(s.indexOf("prop\\=eight=contains\\=equals") > -1);
-        assertTrue(s.indexOf("prop\\#nine=contains\\#hash") > -1);
-        assertTrue(s.indexOf("prop\\!ten=contains\\!exclamation") > -1);
+        assertTrue(s.contains("\\ prop\\ one\\ =\\ \\ leading and trailing"
+                + " spaces "));
+        assertTrue(s.contains("prop\\ttwo=contains\\ttab"));
+        assertTrue(s.contains("prop\\nthree=contains\\nnewline"));
+        assertTrue(s.contains("prop\\rfour=contains\\rcarriage return"));
+        assertTrue(s.contains("prop\\\\six=contains\\\\backslash"));
+        assertTrue(s.contains("prop\\:seven=contains\\:colon"));
+        assertTrue(s.contains("prop\\=eight=contains\\=equals"));
+        assertTrue(s.contains("prop\\#nine=contains\\#hash"));
+        assertTrue(s.contains("prop\\!ten=contains\\!exclamation"));
     }
 
     /**
@@ -125,13 +125,13 @@ public class LayoutPreservingPropertiesTest {
         // and check that the resulting file looks okay
         String s = readFile(tmp);
 
-        assertTrue(s.indexOf("\\ prop\\ one\\ =\\ \\ leading and"
-                             + " trailing spaces ") == -1);
-        assertTrue(s.indexOf("\\ prop\\ one\\ =new one") > -1);
-        assertTrue(s.indexOf("prop\\ttwo=contains\\ttab") == -1);
-        assertTrue(s.indexOf("prop\\ttwo=new two") > -1);
-        assertTrue(s.indexOf("prop\\nthree=contains\\nnewline") == -1);
-        assertTrue(s.indexOf("prop\\nthree=new three") > -1);
+        assertTrue(!s.contains("\\ prop\\ one\\ =\\ \\ leading and"
+                + " trailing spaces "));
+        assertTrue(s.contains("\\ prop\\ one\\ =new one"));
+        assertTrue(!s.contains("prop\\ttwo=contains\\ttab"));
+        assertTrue(s.contains("prop\\ttwo=new two"));
+        assertTrue(!s.contains("prop\\nthree=contains\\nnewline"));
+        assertTrue(s.contains("prop\\nthree=new three"));
     }
 
     @Test
@@ -172,18 +172,18 @@ public class LayoutPreservingPropertiesTest {
         String s = readFile(tmp);
 
         assertTrue("should have had no properties ",
-                   s.indexOf("prop.alpha") == -1);
+                !s.contains("prop.alpha"));
         assertTrue("should have had no properties ",
-                   s.indexOf("prop.beta") == -1);
+                !s.contains("prop.beta"));
         assertTrue("should have had no properties ",
-                   s.indexOf("prop.gamma") == -1);
+                !s.contains("prop.gamma"));
 
         assertTrue("should have had no comments",
-                   s.indexOf("# a comment") == -1);
+                !s.contains("# a comment"));
         assertTrue("should have had no comments",
-                   s.indexOf("! more comment") == -1);
+                !s.contains("! more comment"));
         assertTrue("should have had no comments",
-                   s.indexOf("# now a line wrapping one") == -1);
+                !s.contains("# now a line wrapping one"));
     }
 
     @Test
@@ -204,9 +204,9 @@ public class LayoutPreservingPropertiesTest {
         String s = readFile(tmp);
 
         assertTrue("should not have had prop.beta",
-                   s.indexOf("prop.beta") == -1);
+                !s.contains("prop.beta"));
         assertTrue("should have had prop.beta's comment",
-                   s.indexOf("! more comment") > -1);
+                s.contains("! more comment"));
     }
 
     @Test
@@ -229,9 +229,9 @@ public class LayoutPreservingPropertiesTest {
         String s = readFile(tmp);
 
         assertTrue("should not have had prop.beta",
-                   s.indexOf("prop.beta") == -1);
+                !s.contains("prop.beta"));
         assertTrue("should not have had prop.beta's comment",
-                   s.indexOf("! more comment") == -1);
+                !s.contains("! more comment"));
     }
 
     @Test
@@ -262,13 +262,13 @@ public class LayoutPreservingPropertiesTest {
         String s2 = readFile(tmp2);
 
         // check original is untouched
-        assertTrue("should have had 'simple'", s1.indexOf("simple") > -1);
-        assertTrue("should not have had prop.new", s1.indexOf("prop.new") == -1);
+        assertTrue("should have had 'simple'", s1.contains("simple"));
+        assertTrue("should not have had prop.new", !s1.contains("prop.new"));
 
         // check clone has the changes
         assertTrue("should have had 'a new value for beta'",
-                   s2.indexOf("a new value for beta") > -1);
-        assertTrue("should have had prop.new", s2.indexOf("prop.new") > -1);
+                s2.contains("a new value for beta"));
+        assertTrue("should have had prop.new", s2.contains("prop.new"));
     }
 
     @Test
@@ -293,16 +293,16 @@ public class LayoutPreservingPropertiesTest {
         // and check that the resulting file looks okay
         String s = readFile(tmp);
 
-        assertTrue(s.indexOf("prop\\:seven=new value for seven") > -1);
-        assertTrue(s.indexOf("prop\\=eight=new value for eight") > -1);
-        assertTrue(s.indexOf("prop\\ eleven=new value for eleven") > -1);
-        assertTrue(s.indexOf("alpha=new value for alpha") > -1);
-        assertTrue(s.indexOf("beta=new value for beta") > -1);
+        assertTrue(s.contains("prop\\:seven=new value for seven"));
+        assertTrue(s.contains("prop\\=eight=new value for eight"));
+        assertTrue(s.contains("prop\\ eleven=new value for eleven"));
+        assertTrue(s.contains("alpha=new value for alpha"));
+        assertTrue(s.contains("beta=new value for beta"));
 
-        assertTrue(s.indexOf("prop\\:seven=contains\\:colon") == -1);
-        assertTrue(s.indexOf("prop\\=eight=contains\\=equals") == -1);
-        assertTrue(s.indexOf("alpha:set with a colon") == -1);
-        assertTrue(s.indexOf("beta set with a space") == -1);
+        assertTrue(!s.contains("prop\\:seven=contains\\:colon"));
+        assertTrue(!s.contains("prop\\=eight=contains\\=equals"));
+        assertTrue(!s.contains("alpha:set with a colon"));
+        assertTrue(!s.contains("beta set with a space"));
     }
 
     private static String readFile(File f) throws IOException {